Which laptop is best below 20k and best battery backup? Top brands only like dell hp acer lenovo etc?

Which laptop is best below 20k and best battery backup? Top brands only like dell hp acer lenovo etc?

You can go for hp450, ACER LAPTOP AOD 270 w7, Lenovo 110 59-328520 laptop, HP 1000-1b02AU, Samsung N102-SB01/B05IN

20K wow bro thats high. If you can afford that just get like one of the best laptops or pc on the market for like 10K